Jeska's Will

Text:

Choose one. If you control a commander as you cast this spell, you may choose both instead.
• Add for each card in target opponent's hand.
• Exile the top three cards of your library. You may play them this turn.

Rulings:

• 11/10/2020 Jeska’s Will isn’t a mana ability, even if you select the first mode (or both modes). It uses the stack and can be responded to.
• 11/10/2020 Use the number of cards in the target opponent’s hand as Jeska’s Will resolves to determine how much <img src="/Handlers/Image.ashx?size=small&amp;name=R&amp;type=symbol" alt="Red" align="absbottom" /> to add.
• 11/10/2020 You must follow the normal timing permissions and restrictions for the exiled cards. You can’t play lands this way unless you have land plays available.
• 11/10/2020 You’ll still pay all costs for a spell cast this way, including additional costs. You may also pay alternative costs if any are available.
• 11/10/2020 Any of the exiled cards you don’t play will remain exiled.
• 11/10/2020 Even though the card is named after a specific character, controlling any commander will satisfy its condition.
• 11/10/2020 There’s no extra bonus if you control more than one commander.
• 11/10/2020 The commander you control doesn’t have to be your commander.
• 11/10/2020 Once you’ve announced that you’re casting a spell, players can’t take any actions until you’ve finished doing so. Notably, opponents can’t try to remove your commander to change how many modes you may choose.
• 11/10/2020 Once you’ve chosen both modes for the spell, it doesn’t matter whether you continue to control a commander. This is true even if you somehow no longer control a commander as you finish casting the spell.